A rod of length L and mass m is kept vertically on the ground. Its potential energy is :

If a stone is thrown up vertically and return to ground, its potential energy is maximum

A uniform rod of length 4 m and mass 20 kg is lying horizontal on the ground. The work done in keeping it vertical with one of its ends touching the ground, will be -

If the stone is thrown up vertically and return to ground, its potential energy is maximum

A rod of mass M and length L is made to stand vertically. Potential energy of the rod in this position is

A rod of mass M and length L is made to stand vertically. Potential energy of the rod in this position is

A rope of length l and mass 'm' is connected to a chain of length l and mass 2 m and hung vertically as shown. What is the change in graviational potential energy if the system is inverted and hung from same point. .

A rope of length l and mass 'm' is connected to a chain of length l and mass 2 m and hung vertically as shown. What is the change in graviational potential energy if the system is inverted and hung from same point. .